The DNF2540-T0101 from Mercury Systems is a RF & Microwave Circulator with Frequency 1.6 to 1.9 GHz, Bandwidth 300 MHz, Average Power Forward 1 W, Peak Power 100 W, Insertion Loss 0.6 dB. Tags: Drop-in Circulator. More details for DNF2540-T0101 can be seen below.